restriction
US /rɪˈstrɪk.ʃən/
UK /rɪˈstrɪk.ʃən/

1.
a limiting condition or measure, especially a legal one
:
•
There are strict restrictions on the use of water during the drought.
•
The new law imposes a restriction on public gatherings.
2.
the act of restricting or the state of being restricted
:
•
The restriction of movement was necessary for public safety.
•
The doctor advised a restriction of salt in her diet.